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Method for preparing cadmium telluride/ferroferric oxide magnetic fluorescent fiber through in-situ method

A technology of triiron tetroxide and fluorescent fibers, applied in chemical instruments and methods, luminescent materials, etc., can solve problems such as poor dispersion of quantum dots, and achieve the effect of simple method and good operability

Inactive Publication Date: 2014-04-23
EAST UNIV OF HEILONGJIANG
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  • Summary
  • Abstract
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  • Application Information

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Problems solved by technology

[0003] In order to solve the technical problem of poor dispersibility of quantum dots in polymers, the present invention provides a method for preparing cadmium telluride ferromagnetic fluorescent fibers by in-situ method

Method used

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  • Method for preparing cadmium telluride/ferroferric oxide magnetic fluorescent fiber through in-situ method
  • Method for preparing cadmium telluride/ferroferric oxide magnetic fluorescent fiber through in-situ method
  • Method for preparing cadmium telluride/ferroferric oxide magnetic fluorescent fiber through in-situ method

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specific Embodiment approach 1

[0020] Specific embodiment 1: The method for preparing cadmium telluride ferromagnetic fluorescent fiber by in-situ method in this embodiment is as follows:

[0021] 1. Add 0.36g~0.3612g sodium borohydride, 6mL deionized water and 0.51g~0.5146g tellurium powder into a 25mL round bottom flask, and put the round bottom flask under the condition of 0℃~4℃ ice water bath Stir on the stirrer at a stirring speed of 200rpm to 300rpm, react for 10h, and obtain a sodium telluride hydride solution;

[0022] 2. Add 0.02g of sodium hydroxide into 40mL of deionized water, and stir until the sodium hydroxide is completely dissolved to obtain a sodium hydroxide solution;

[0023] 3. Add 24g polyvinyl alcohol to 376g deionized water, then raise the temperature to 60°C and keep the temperature constant for 2-3 hours, then raise the temperature to 90°C and keep the temperature constant for 4-5 hours to obtain a polyvinyl alcohol solution;

[0024] 4. Take 250 mL of the polyvinyl alcohol solutio...

specific Embodiment approach 2

[0026] Specific embodiment 2: the difference between this embodiment and specific embodiment 1 is that in step 1, stir at a stirring speed of 250 rpm. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0027] Embodiment 3: This embodiment is different from Embodiment 1 in that in step 3, the temperature is raised to 60° C. and kept at a constant temperature for 2.5 hours. Others are the same as in the first embodiment.

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Abstract

The invention provides a method for preparing cadmium telluride / ferroferric oxide magnetic fluorescent fiber through an in-situ method, relates to a method for preparing fluorescent fiber and aims to solve the technical problem that quantum dots have poor dispersity in a polymer. The method comprises the following steps: 1, preparing a sodium hydrogen telluride solution; 2, preparing a sodium hydroxide solution; 3, preparing a polyvinyl alcohol solution; 4, preparing a cadmium telluride quantum dot / ferroferric oxide / polyvinyl alcohol compound liquid; and 5, performing electrostatic spinning on the cadmium telluride quantum dot / ferroferric oxide / polyvinyl alcohol compound liquid obtained in the step 4. By preparing water-based cadmium telluride quantum dots through an in-situ method, compounding with polyvinyl alcohol and performing conventional electrostatic spinning to prepare the fluorescent fiber, the fluorescent fiber can be obtained without dyeing the fiber, and people do not need to worry about the situation that the fluorescent effect of the fiber is influenced due to the fall-off of dye on the surface of the fiber. The method provided by the invention is simple and high in operability.

Description

technical field [0001] The invention relates to a method for preparing fluorescent fibers. Background technique [0002] With the development of economy, counterfeit and shoddy goods, as a social phenomenon, have become a common concern of all countries in the world. Many developed countries in the world have invested a lot of power to develop various anti-counterfeiting technologies. At present, the fluorescent anti-counterfeiting materials used in the market are mainly composite materials of fluorescent dyes and polymers, and there are few fluorescent fibers. Due to the short lifetime of fluorescent dyes, their applications are limited. Compared with organic fluorescent pigments, cadmium telluride quantum dots have many advantages such as long fluorescence lifetime and controllable color. However, due to the poor dispersion of quantum dots in polymers, a small number of people use expensive drugs to modify them to improve their dispersion in polymer solutions. Zz In th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/50D01F1/10C09K11/88
Inventor 赵冬梅杜宇虹任德财
Owner EAST UNIV OF HEILONGJIANG
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